IOS 4.2 AirPrint调用

#pragma mark -

#pragma mark Application lifecycle

#define pdfUrl 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

    

    // Override point for customization after application launch.

#if __IPHONE_OS_VERSION_MAX_ALLOWED > 40100

UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];

UIPrintInfo *printInfo = [UIPrintInfo printInfo];

printInfo.outputType = UIPrintInfoOutputGeneral;

printInfo.jobName = @"Air Print test";

printInfo.duplex = UIPrintInfoDuplexLongEdge;

controller.printInfo = printInfo;

controller.showsPageRange = YES;

controller.printingItem = @"asfasdf";

void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =

^(UIPrintInteractionController *pic, BOOL completed, NSError *error) {

//self.content = nil;

if (!completed && error)

NSLog(@"FAILED! due to error in domain %@ with error code %u",

 error.domain, error.code);

};

//

// if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

// [controller presentFromRect:printBtn.frame

// inView:self.view

//   animated:YES

//  completionHandler:completionHandler];

// } else {

[controller presentAnimated:YES completionHandler:completionHandler];

// }

#endif

    [self.window makeKeyAndVisible];

    

    return YES;

}